Articles having low wettability and methods for making

a technology of low wettability and low wettability, applied in the field of surface wettability, can solve the problems of high degree of “sheeting” of water over the solid surface, metallic components are particularly susceptible to icing, fouling, etc., and coatings, though effective, are often limited in practical application. , to achieve the effect of low liquid wettability

Inactive Publication Date: 2007-02-08
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this patent is that it provides ways to make materials like metals have long-lasting surfaces that are difficult to wet by liquids. This can be useful in various applications where reducing fluid absorption or adhesion is important.

Problems solved by technology

The patent text discusses the need for surfaces with low liquid wettability, particularly for metallic components that are susceptible to icing, fouling, and fogging. The technical problem is to provide durable surfaces with low liquid wettability and methods for making them.

Method used

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  • Articles having low wettability and methods for making
  • Articles having low wettability and methods for making
  • Articles having low wettability and methods for making

Examples

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Embodiment Construction

[0009] In the following description, like reference characters designate like or corresponding parts throughout the several views shown in the figures. It is also understood that terms such as “top,”“bottom,”“outward,”“inward,” and the like are words of convenience and are not to be construed as limiting terms. Furthermore, whenever a particular feature of the invention is said to comprise or consist of at least one of a number of elements of a group and combinations thereof, it is understood that the feature may comprise or consist of any of the elements of the group, either individually or in combination with any of the other elements of that group.

[0010] Referring to the drawings in general and to FIG. 1 in particular, it will be understood that the illustrations are for the purpose of describing a particular embodiment of the invention and are not intended to limit the invention thereto. FIG. 1 is a schematic cross-sectional view of a surface of an article of the present invent...

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Abstract

An article having low wettability is presented. The article comprises a body portion and a surface portion disposed on the body portion. The surface portion comprises a plurality of features disposed on the body portion, and the features have a size, shape, and orientation selected such that the surface portion has a wettability sufficient to generate, with a reference liquid, a contact angle of at least about 100 degrees. The features comprise a height dimension (h) and a width dimension (a), and are disposed in a spaced-apart relationship characterized by a spacing dimension (b). The ratio of b/a and the ratio of h/a are such that the drop exhibits metastable non-Wenzel behavior.

Description

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Claims

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Application Information

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Owner GENERAL ELECTRIC CO
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